| A | B |
| Escarpments | steep, jagged cliff |
| Kilimanjaro | means "shining mountain" in Swahili |
| rift valley | is a large break in the Earth's surface |
| gorges | steep-sided valleys formed from rivers |
| principal | meaning "first" or "top" |
| industrial diamonds | used to make drills, saws, and grinding tools |
| droughts | periods of time when there is no rain |
| annually | yearly |
| rain forest | dense stands of trees and other plants |
| canopy | tops of the highest trees |
| deforestation | widespread clearing of forestland |
| Ecotourism | touring a place without causing harm to the environment |
| savanna | grasslands with scattered woods |
| desertification | process that turns fertile land into extremely dry land |
| succulents | plants that can conserve moisture |
| tropical rain forest | hot temperatures and plentiful rains |
| Sahara, Kalahari and Namib | deserts in Africa |